What are some ideas for glamming up my apartment?

mirrors, crystal, candlelight, chandeliers, fur throws. Silver items, luxurious flowers.

You can buy a wall tapestry to hang for decor https://www.dresslily.com/home-decor-c-303-page-6.html it willmake a change that is not permanent

Do put in to much clutter. That makes almost any decor look cheap. A few well placed pieces look better than a lot of stuff. Excellent video here:

https://www.youtube.com/watch?v=WRFlWKJ7f0g

Pinterest allows you to see what others have done and you can find a look that suits your style. I'd personally go for the Batman theme, but that's me. Your taste may vary.

Here is an article that might help - http://www.thehousethata-mbuilt.com/2015/05/12-simple-ways-to-make-your-home-look-more-glamorous.html

Plants and colorful flowers, candles, and mirrors can glam your place up in a hurry. Also, a nice colorful throw draped casually over the sofa or chair can add a pop of color fairly inexpensively. Lighting is also important!